class_docstr: This class tests the ensemble classifier.
class_docstr_tok: ["This","class","tests","the","ensemble","classifier","."]
code: def test_layers(self):
      with self.assertRaises(NotImplementedError):
          self.ensemble.get_activations(self.x_test_mnist, layer=2)
  
file_path: adversarial-robustness-toolbox/tests/estimators/classification/test_ensemble.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import logging
  import unittest
  import keras.backend
  import numpy
  from art.estimators.classification.ensemble import EnsembleClassifier
  from tests.utils import TestBase, get_image_classifier_kr
label_desc: Use image node_id 5 for calling the TestEnsembleClassifier obj's underlying member method code with example usage: obj.test_layers() without return types